Float-valve.



No. 812,337, PATENTED FEB. 13, 1906.

W. GRAY. FLOAT VALVE.

APPLIOAT10N IILED SEPT. 29,1904.

- on line 2 2 on said Fi nrran srar ns PATENT OFFICE.

WILLIAM GRAY, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TOJAMES C. ROBERTSON, OF SPRINGFIELD, MASSACHUSETTS.

FLOAT-VALVE.

Specification of Letters Patent.

Patented Feb. 13, 1906.

' To a whom it may concern;

Be it known that I, WILLIAM GRAY, a citizen of the United States,residing at Spring field, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements inFloat-Valves, of which the following is .a specification.

This invention relates to valves, and especially to float-valves, theobject of the invention being to provide a valve of this description inwhich the use of packing is entirely eliminated and in which the valveto which the float is attached and which extends through an opening inthe valve-body may be removed by simply disconnecting the stem from thefloat, means being also provided to induce a suction effect through saidopening in the body when the valve is open, whereby any leakagetherethrough is entirely obviated and permitting the plunger to beloosely fitted in the valve-body without packing.

A further object of the invention is to provide means to adjust themovement of the valve away from its seat to determine the maximum degreeof opening. movement of said valve.

In the drawings forming part of this application, Figure 1 is alongitudinal sectional elevation of'a'valve in which the invention isembodied. Fig. 2 is a cross-section of the same in a plane at rightangles to the view shown in Fig. 1 the plane of the section being 1.Referring to these drawings, a is the valvecasing, through whichlongitudinally there extends a cylindrical bore b, in one end of.

which is formed the valve-seat c, the opposite end of the bore beingopen. About midway between the two ends of the casing is theoutlet-opening d, the inlet-opening being at that end of the casing inwhich the valve 0 is located. Within the cylindrical bore of the casinga plunger e is located, one and f of which constitutes a valve to fitthe valve-seat c to close the inlet-,opening. Between the outlet-openind and the open end of the valve-casing t e lunger is provided with oneor more circular eads g, which fit loosely in the cylindrical bore 1),and beyond these heads the plunger extends outside of the casing and isconnected, by means of the elbowlever h, pivotally supported on thecasing at 9', with a float 1c, the arm m of which is screwed into orotherwise secured to the lever it. On

said elbow-lever is an adjusting-screw 0, the point of which is adaptedto bear on the cas ing a, whereby the movement of said elbowlever in onedirection may be limited to determine the maximum degree of opening ofthe valve. Between the'outlet-opening d and the valve 0 the plunger isprovided with the radial arms or projections p, whereby it is supportedin axial alinement with thebore of the valve-casing. The plunger is notfitted with packing of any description, and it fits loosely within thebore 1), and to make this loose-fitting constructionractically'operative, whereby there will be no leakage around the'loose-fittin heads 9 when the valve is open, a channe q is formed inthe wall of the casing and extending longitudinally thereof, one end ofthe channel communicating with the bore I) just .back of the valve-seatc and the other end thereof com'- municating with the bore 1) near theopen end of the casing beyond the outlet-openingd. By .means of thisdisposition of the channel g the water is entirely shutoff therefromwhen the valve is closed. As soon, however, as the float lc'falls, thevalve is. opened in the usual manner by the action of the float, and theflow of water through the valve and the outlet-opening (1 will inducethe as iration of air through the channel in the ection'of the valve,said air entering through the open end of the cas ing and around theloosely-fitting head g, andv with this air-current thus maintainedaround the head g no water can possibly escape through the open end ofthe casing.

The hereinbefore-described construction is inex ensive, exceedinglydurable, owing to the act that there are no soft packings, and it is aconstruction which is readily taken apart for cleaning or examination,it being only necessary to remove the elbow-lever h, whereupon theplunger may be withdrawn.

I am aware that valves of various kinds have been rovided with channelsin the wall thereof W ereb their plun ers might be counterbalance andIam a so. aware that drainage-ducts have been applied to valvebodies forthe purpose of 'keeping certain cavities therein clear of water; but thechannel g, herein described, does not serve. for either of thesepurposes and is so arranged that when the valve is 0 en the flow ofwater will-be transversely 0 one end thereof,whereby(the other end ofthe channel being practically open) air will be aspirated through saidchannel in the-direction of the valve.

Having thus described my invention, What I claim, and desire to secureby Letters Patent of the United States, is

1. A float-valve, comprising an open-ended easing having a straightcylindrical bore formed at one end with a valve-seat, said casing beingfurther provided with an intermediate outlet, and with a separatesuction passage in communication with the bore contiguousto thevalve-seat and at a point between one open end and the outlet, apaekingless float-operated plunger arranged within the bore and providedat'one end with a valve,

' and at the opposite end portion With a head loosely fitting the openend of the casing.

I 2. Afloat-valve, comprising an open-ended casing having a straightcylindrical bore formed at one end with a valve-seat, saidcasing beingfurther provided with an intermediate outlet, and with a separatelongitudinal suction-passage paralleling the bore and in communicationwith the latter contiguous to the valve-seat and also at a pointbetween- WILLIAM GRAY.

Witnesses:

WM. CHAPIN, K. I. CLEMONS;

